title: Sequence of morphological alterations in blue-green algae in the course of cyanophage infection.
abstract: Electron microscopic studies were performed on the sequence of morphological alterations induced by the cyanophage PP-1 in the blue-green algae Phormidium sp. and Plectonema boryanum. The following phases of virus infection were made evident: virus adsorption onto the host cell; the presence of virus "ghosts", suggesting the penetration of viral DNA into the cell and its multiplication in the nucleoplasm; invagination of thylakoids and formation of the "virogenic stroma"; virus maturation within the "virogenic stroma"; cellular lysis at 48 hours post inoculation.
mesh_terms: D001435:Bacteriophages; D000458:Cyanobacteria; D003588:Cytopathogenic Effect, Viral; D008854:Microscopy, Electron